[mythtv-users] Few seconds missing in recordings (progress with analog overlapping?)

jeetu.golani at gmail.com jeetu.golani at gmail.com
Wed Oct 5 18:14:14 UTC 2011

Hi Mike,

Thanks so much for writing in :)

Well I set in an start early and end late time of 3 seconds under
General (Advanced) and I've managed to close this gap a little bit :)

However there is still a perceptible loss :(

I know the question of overlapping recordings on the same channel,
same analog tuner has been raised many times on this forum. The
general consensus seems to be that current mythtv versions don't do
this for analog and with digital tuners multirec is an
option....however I was wondering (hoping) if there was any work being
done or considered to provide something similar for analog tuners even
if it is not as fully functional as multirec?

Thanks everyone here for taking the time :)....appreciate it :)

Bye for now

On Wed, Oct 5, 2011 at 8:23 AM, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> On 10/03/2011 01:50 AM, jeetu.golani at gmail.com wrote:
>> Unfortunately the recording still had the same 3 seconds loss :(
> This is how channel changes work.  MythTV stops the recording in
> progress, changes channel (if necessary), and then starts a new
> recording--which it can't actually "start" until it receives a
> keyframe.  This all takes time--especially when you factor in the
> hardware delays (i.e. buffering and caching performed in encoder
> hardware, etc).  It's the exact same reason that people always complain
> that Live TV channel changes are slow in MythTV (and the exact same
> reason channel changes are slow in cable-/satellite-company STBs and
> DVRs)...
> Feel free to read up on any of the multiple threads on slow channel
> changes in Live TV for more details.  Short answer is, though, unless
> you have additional tuners that you can use and can use "start early"
> and "end late" settings on all your recording rules, you're going to
> miss those few seconds.
> Mike
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